Ontario water temperature in January

Is Ontario warm enough to swim in winter? In January water temperature throughout Ontario is not yet warm enough for swimming and does not exceed 20°C. Based on average water temperature observations over the past ten years, the warmest water temperature in Ontario in January was 5.7°C (in Gananoque), and the coldest -1.8°C (in Kashechewan). To find out the sea temperature today and in the coming days, go to Current sea temperature in Ontario

Ontario surface temperature in January

Ontario cities and resorts with the values of the average water temperature in January in recent years.
For more detailed information about water temperature, surf forecast, weather and time of sunrise and sunset in any specific area of your interest, just click on a city name. For ease of search, all places are also grouped by the first letter of the name.

Ontario list of regions

To find out what the water temperature was in Ontario any day over a period of the last ten years, select the month

Places with the warmest average water temperature in Ontario in January. Also indicated are the maximum and minimum temperatures in January for these locations based on observations over the past 10 years

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

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Our report for Canada is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.